Maynard H Sacy , MN November 03, 2014 Appliance: Model AMANA RADARRANGE My microwave oven quit heating and started making a louder noise and a slight smell of a overheating component I trouble shot it using some online suggestions and found a bad high voltage diode. I ordered a new part, installed it, and now have an extra microwave. Will be giving it to a friend in need. The part cost was under $11 with $7 plus for shipping. Received the part in three days from AppliancePartsPros. 6 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours